[puvy]

I recently purchased an air compressor from a " return " company hoping to save a few bucks verses buying a brand new one . The problem is that it will pump up to about 50 p.s.i. and then the electric motor saftey switch will cut out due to the motor not being able to turn the pump. I noticed that the compressor pump becomes somewhat hard to turn as though it is building up alot of compression or back pressure . I am thinking that there is some sort of valve that should prevent this and it is not working properly . The compressor is 240v 120 p.s.i. and , yes , it is wired to an 240v oulet ( I got juiced pretty bad from it ) . Any help would be great ...not too sure how everything works on it ( valves , ect. ) to work properly . Thanks ,Tim.